The booklet is part of a grade 10-12 social studies series produced for bilingual education. The series consists of six major thematic modules, with four to five booklets in each. The interdisciplinary modules are based on major ideas and designed to help students understand some major human problems and make sound, responsive decisions to improve their own and others' lives in the global society. Students are taught to: (1) comprehend and analyze an issue and synthesize their understanding of it; (2) affectively interpret the topic and clarify their values; and (3) participate in activities stressing development of critical reading and expository writing skills and use and interpretation of illustrations, graphs, and charts. Each booklet is published with Spanish and English on facing pages. A "student edition" (not included here) and the "teacher's edition" are identical, except for occasional marginal notes in the latter. This booklet, part of the Personality module, focuses on the roles others play in development of our personalities. Three case studies address the importance of the family in forming foundations for personality and reinforcing cultural values and beliefs, of peer groups at different stages of life, and of intimate friendships and common expectations and conflicts. A glossary and suggested reading lists are included. (MSE)